Localities.—Found in thin veins or elliptical masses, never in extensive layers like Pennsylvania coal. Near Richmond, Va.; Deep River, N. C.; Michigan, Missouri, Texas; Evanston, Utah; Coal Creek and Bellmonte, Col.; Boreman, Dearborn River and Greenhorn Gulch, Mont.
15.—Calamine.
Occurs in crystals and masses; glossy lustre; harder than marble; brittle; heated it swells up, becomes opaque and emits a green light; dissolves, when powdered, in hot sulphuric acid without effervescence; gravity 3.4.
Value.—An ore of zinc yielding from forty to sixty per cent.
Localities.—Found in limestone rock with other ores. Friedensville, Perkiomen, Phœnixville, Lancaster and Selin’s Grove, Pa.; Austin’s Mines in Wythe County, Va.; Claiborne County, Tenn.; Jefferson County, Mo.
16.—Cannel Coal.
Occurs in compact masses; dull lustre; brittle, breaking with a curved surface; burns readily but does not melt; does not soil the fingers; gravity about 1.2.
Value.—Used for fuel and for making gas, oil and ornaments.
Localities.—Found in the Mississippi Valley; Kentucky; Lick, Ohio; Illinois; Moniteau County, Mo.; Kenawha County, Va.; Beaver County, Pa.